<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .upload_dialog_div {
            position: fixed;
            left: 0px;
            right: 0px;
            top: 0px;
            bottom: 0px;
            overflow: auto;
            visibility: visible;
            background-color: rgba(60, 60, 60, 0.5);
            z-index: 99;
        }

        .style_content_div {
            position: relative;
            margin: 160px auto;
            width: 400px;
            height: 160px;
            background: #F5F5DC;
        }
    </style>
</head>
<body>
<div class="upload_dialog_div">
    <div class="style_content_div">
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    </div>
</div>
</body>
</html>
